<template>
	<view class="cart-caontainer" v-if="cart.length !==0">
		<!-- 这是收货地址组件 -->
		<my-address></my-address>
		<!-- 这是商品列表的标题区域 -->
		<view class="cart-title">
			<!-- 左侧的图标 -->
			<uni-icons type="shop" size="18"></uni-icons>
			<!-- 右侧的文本 -->
			<text class="cart-title-text">购物车</text>
		</view>
		<!-- 循环渲染购物车中的商品数据 -->
		<uni-swipe-action>
			<block v-for="(goods,i) in cart" :key="i">
			<uni-swipe-action-item :right-options="options" @click="swiperItemClickhandler(goods)">
				<!-- 在 radioChangeHandler 事件处理函数中，通过事件对象 e，得到商品的 goods_id 和 goods_state -->
				<my-goods :goods="goods" :showRedio="true" @radio-change="radioChangeHandler" :show-num="true" @num-change="numberChangeHandler"></my-goods>
			</uni-swipe-action-item>
			</block>
		</uni-swipe-action>
		<!-- 这是使用自定义的结算组件 -->
		<my-settle></my-settle>
	</view>
<!-- 空白购物车的区域 -->
<view class="empty-cart" v-else>
	<image src="/static/cart_empty@2x.jpg" class="empty-img"></image>
	<text class="tip-text">空空如也</text>
</view>
</template>

<script>
	import badgeMix from '@/mixins/tabbar-badge.js'
	import {mapState , mapMutations} from 'vuex'
	export default {
		mixins: [badgeMix],
		computed:{
			...mapState('m_cart',['cart'])
		},	
		data() {
			return {
            options:[{
				text:'删除',
				style:{
					backgroundColor:'#C00000'
				}
			}]
			};
		},
		methods:{
			...mapMutations('m_cart',['updateGoodsState','updateGoodsCount','removeGoodsById']),
			// 商品的勾选状态发生了变化
			radioChangeHandler(e){
				// console.log(e);
				this.updateGoodsState(e)
			},
			numberChangeHandler(e){
				this.updateGoodsCount(e)
			},
			swiperItemClickhandler(goods){
				// console.log(goods);
				this.removeGoodsById(goods.goods_id)
			}
		}

	}
</script>

<style lang="scss">
	.cart-title {
		height: 40px;
		display: flex;
		align-items: center;
		padding-left: 5px;
		border-bottom: 1px solid #EFEFEF;

		.cart-title-text {
			font-size: 14px;
			margin-left:10px;
		}
	}
	.cart-caontainer{
		padding-bottom: 50px;
	}
	.empty-cart{
		//纵向布局横向居中
		display: flex;
		flex-direction: column;
		align-items: center;
		.empty-img{
			padding-top: 150px;
			width: 90px;
			height: 90px;
		}
		.tip-text{
			font-size: 12px;
		}
	}
</style>